CN219759353U - Magnetic element, inverter and switching power supply - Google Patents
Magnetic element, inverter and switching power supply Download PDFInfo
- Publication number
- CN219759353U CN219759353U CN202321142834.7U CN202321142834U CN219759353U CN 219759353 U CN219759353 U CN 219759353U CN 202321142834 U CN202321142834 U CN 202321142834U CN 219759353 U CN219759353 U CN 219759353U
- Authority
- CN
- China
- Prior art keywords
- magnetic core
- magnetic
- winding coil
- core
- magnetic element
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000004804 winding Methods 0.000 claims abstract description 46
- 230000004907 flux Effects 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 11
- 239000011248 coating agent Substances 0.000 claims description 8
- 238000000576 coating method Methods 0.000 claims description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 230000035699 permeability Effects 0.000 claims description 5
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 4
- 238000001914 filtration Methods 0.000 abstract description 6
- 229920006395 saturated elastomer Polymers 0.000 abstract description 2
- 239000004033 plastic Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 239000004593 Epoxy Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- YLQBMQCUIZJEEH-UHFFFAOYSA-N Furan Chemical compound C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- -1 acryl Chemical group 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 210000003298 dental enamel Anatomy 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000002159 nanocrystal Substances 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 229920006305 unsaturated polyester Polymers 0.000 description 1
Landscapes
- Power Conversion In General (AREA)
Abstract
The utility model discloses a magnetic element, an inverter and a switching power supply, wherein the magnetic element comprises a first magnetic core and a second magnetic core which are made of high-permeability high-saturation magnetic flux density materials; the first magnetic core is of a closed annular structure; the second magnetic core is of a flat plate structure, is arranged on the inner periphery of the first magnetic core, and defines the first magnetic core part and the second magnetic core part which are symmetrically arranged; the magnetic element further comprises a first winding coil and a second winding coil, the first winding coil is wound on the first magnetic core part, the second winding coil is wound on the second magnetic core part to form a differential common mode integrated inductor, leakage inductance can be increased between the first winding coil and the second winding coil through the second magnetic core, and the whole magnetic element is not easy to enter a saturated state in a larger power use environment due to the first magnetic core and the second magnetic core which are made of high-permeability high-saturation magnetic flux density materials, so that good filtering performance can be kept all the time.
Description
Technical Field
The present utility model relates to the field of electronic devices, and in particular, to a magnetic element, an inverter, and a switching power supply.
Background
In the use process of the electronic device, electromagnetic interference signals are easy to generate, and the electromagnetic interference signals can easily influence the normal use of the electronic device or influence the functions of part of the structures.
In this regard, magnetic elements are generally used to filter electromagnetic interference signals, so that the magnetic integration technology can effectively reduce the volume, weight and loss of the magnetic elements, and plays an important role in high-power-density switching power supplies. However, in some applications such as high power applications, the magnetic core of the magnetic element is easy to enter into saturation state, which reduces the filtering effect of the magnetic element.
Disclosure of Invention
In order to solve the technical problems, the utility model provides a magnetic element, an inverter and a switching power supply.
Specifically, the technical scheme adopted by the utility model for solving the technical problems is as follows: constructing a magnetic element comprising a first core and a second core made of a high permeability, high saturation magnetic flux density material;
the first magnetic core is of a closed annular structure; the second magnetic core is of a flat plate structure, is arranged on the inner periphery of the first magnetic core, and defines the first magnetic core into a first magnetic core part and a second magnetic core part which are symmetrically arranged;
the magnetic element further comprises a first winding coil and a second winding coil, wherein the first winding coil is wound on the first magnetic core part, and the second winding coil is wound on the second magnetic core part.
In some embodiments, the second magnetic core length dimension is less than the inner diameter of the first magnetic core; both ends of the second magnetic core in the length direction are fixed in the first magnetic core.
In some embodiments, the saturation magnetic flux density of both the first magnetic core and the second magnetic core is greater than 1 tesla.
In some embodiments, the first magnetic core is made of amorphous or nanocrystalline;
the second magnetic core is made of amorphous, nanocrystalline or silicon steel.
In some embodiments, an outer circumference of the first magnetic core is provided with an insulating coating;
and the periphery of the second magnetic core is provided with an insulating coating.
In some embodiments, the number of turns of the first winding coil and the second winding coil is the same.
In some embodiments, the first winding coil is any one of an enameled wire, a flat copper wire, a stranded wire, or a tri-layer insulated wire;
the second winding coil is any one of an enameled wire, a flat copper wire, a multi-strand stranded wire or a three-layer insulated wire.
In some embodiments, the magnetic element further includes a mounting base, and the mounting base is provided with a plurality of through holes for two ends of the first winding coil to pass through to form a first pin, and two ends of the second winding coil to pass through to form a second pin.
The utility model also provides an inverter comprising the magnetic element according to any of the above embodiments.
The utility model also provides a switching power supply comprising the magnetic element according to any of the above embodiments.
The implementation of the utility model has the following beneficial effects: the magnetic element comprises a first magnetic core and a second magnetic core which are made of high-permeability high-saturation magnetic flux density materials; the first magnetic core is of a closed annular structure; the second magnetic core is of a flat plate structure, is arranged on the inner periphery of the first magnetic core, and defines the first magnetic core part and the second magnetic core part which are symmetrically arranged; the magnetic element further comprises a first winding coil and a second winding coil, the first winding coil is wound on the first magnetic core part, the second winding coil is wound on the second magnetic core part to form a differential common mode integrated inductor, leakage inductance can be increased between the first winding coil and the second winding coil through the second magnetic core, and the whole magnetic element is not easy to enter a saturated state in a larger power use environment due to the first magnetic core and the second magnetic core which are made of high-permeability high-saturation magnetic flux density materials, so that good filtering performance can be kept all the time.
Drawings
In order to more clearly illustrate the technical solution of the present utility model, the following description will be given with reference to the accompanying drawings and examples, it being understood that the following drawings only illustrate some examples of the present utility model and should not be construed as limiting the scope, and that other related drawings can be obtained from these drawings by those skilled in the art without the inventive effort. In the accompanying drawings:
FIG. 1 is a schematic diagram of the structure of a magnetic element in some embodiments of the utility model;
fig. 2 is a schematic diagram of the bottom structure of the magnetic element in fig. 1.
Detailed Description
For a clearer understanding of technical features, objects and effects of the present utility model, a detailed description of embodiments of the present utility model will be made with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "rear", "upper", "lower", "left", "right", "longitudinal", "transverse", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail", etc. are configured and operated in specific directions based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model, and do not indicate that the apparatus or element to be referred to must have specific directions, and thus should not be construed as limiting the present utility model.
It should also be noted that unless explicitly stated or limited otherwise, terms such as "mounted," "connected," "secured," "disposed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. When an element is referred to as being "on" or "under" another element, it can be "directly" or "indirectly" on the other element or one or more intervening elements may also be present. The terms "first," "second," "third," and the like are used merely for convenience in describing the present utility model and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, whereby features defining "first," "second," "third," etc. may explicitly or implicitly include one or more such features. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the following description, for purposes of explanation and not limitation, specific details are set forth such as the particular system architecture, techniques, etc., in order to provide a thorough understanding of the embodiments of the present utility model. It will be apparent, however, to one skilled in the art that the present utility model may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present utility model with unnecessary detail.
Referring to fig. 1 to 2, the present utility model shows a magnetic element including a first core 10 and a second core 20 made of a high permeability and high saturation magnetic flux density material.
The first magnetic core 10 is of a closed annular structure; the second magnetic core 20 has a flat structure, and the second magnetic core 20 is disposed on the inner periphery of the first magnetic core 10, and defines the first magnetic core 10 into a first magnetic core portion 11 and a second magnetic core portion 12 that are symmetrically disposed. Preferably, the first magnetic core 10 has a circular ring structure, the second magnetic core 20 is located at the inner periphery of the first magnetic core 10, the geometric center of the second magnetic core 20 is overlapped with the center of the first magnetic core 10, the first magnetic core 11 and the second magnetic core 12 are symmetrically arranged with the second magnetic core 20 as the symmetry axis, that is, the first magnetic core 11 and the second magnetic core 12 can be regarded as two identical half-rings.
The magnetic element further comprises a first winding coil 30 and a second winding coil 40, wherein the first winding coil 30 is wound on the first magnetic core part 11, and the second winding coil 40 is wound on the second magnetic core part 12, so that the magnetic element forms a differential-common mode integrated inductor.
In some embodiments, the second magnetic core 20 has a square flat plate structure, and the dimension of the second magnetic core 20 in the length direction is smaller than the inner diameter of the first magnetic core 10, so that the second magnetic core 20 can be accommodated in the inner periphery of the first magnetic core 10; both ends of the second core 20 in the longitudinal direction are fixed to the first core 10.
As an example, both ends of the second magnetic core 20 in the length direction may be fixed in the first magnetic core 10 by an adhesive (e.g., insulating glue). As another embodiment, an insulating case may be sleeved on the outer circumference of the first magnetic core 10, and then the second magnetic core 20 may be clamped in the first magnetic core 10.
It is understood that the inner diameter and the outer diameter of the first magnetic core 10 can be selected according to the actual requirement, and the size and the shape of the second magnetic core 20 can be selected according to the size of the first magnetic core 10.
In some embodiments, the thickness of the first magnetic core 10 is similar to the width of the second magnetic core 20.
In some embodiments, the saturation magnetic flux density of both the first magnetic core 10 and the second magnetic core 20 is greater than 1 tesla.
In some embodiments, the high permeability high saturation magnetic flux density material may include amorphous, nanocrystalline, or silicon steel, among others. As an example, the first magnetic core 10 may be made of amorphous or nanocrystalline, and the second magnetic core 20 may be made of amorphous, nanocrystalline, or silicon steel. Understandably, the first magnetic core 10 and the second magnetic core 20 are made of a material with high magnetic permeability and high saturation magnetic flux density, so that the whole magnetic element is not easy to enter a saturation state in a larger power use environment, and a good filtering performance is always maintained.
In the embodiment of the present utility model, the larger power is 1.5kW or more, and may include about 3 kW.
Preferably, the first magnetic core 10 and the second magnetic core 20 are made of the same material, for example, the first magnetic core 10 and the second magnetic core 20 may be made of nanocrystals.
Preferably, the first magnetic core 10 is a unitary structure and the second magnetic core 20 is a unitary structure.
In some embodiments, the outer circumference of the first magnetic core 10 is provided with an insulating coating such as an epoxy insulating coating; the outer circumference of the second magnetic core 20 is provided with an insulating coating such as an epoxy insulating coating.
In some embodiments, the number of turns of the first winding coil 30 is the same as the number of turns of the second winding coil 40. Preferably, the first winding coil 30 is the same material as the second winding coil 40.
In some embodiments, the first winding coil 30 is any one of an enameled wire, a flat copper wire, a stranded wire, or a tri-layer insulated wire; the second winding coil 40 is any one of an enamel wire, a flat copper wire, a multi-strand wire, or a tri-layer insulated wire. Of course, the first winding coil 30 and the second winding coil 40 may also be other wires according to actual needs, which is not limited herein.
In some embodiments, the magnetic element further includes a mounting base 50, where a plurality of through holes are formed on the mounting base 50 for two ends of the first winding coil 30 to pass through to form the first pin 31, and two ends of the second winding coil 40 to pass through to form the second pin 41.
The mounting seat 50 can be a flat plate structure, and the mounting seat 50 can be a composite material made of epoxy resin organic polymer compound and glass fiber, for example, fr4 plates can be selected. Of course, the mounting base 50 may also be made of a rigid insulating material, such as phenolic plastic, polyurethane plastic, epoxy plastic, unsaturated polyester plastic, furan plastic, silicone resin, acryl resin, and the like, and modified resin thereof.
The utility model also discloses an inverter which comprises the magnetic element of any embodiment, wherein the magnetic element can keep good filtering performance and can keep the inverter in a good working state.
The utility model also discloses a switching power supply, which comprises the magnetic element of any embodiment, wherein the magnetic element can keep good filtering performance, and can keep a good working state even under a large working power.
It is to be understood that the above examples only represent preferred embodiments of the present utility model, which are described in more detail and are not to be construed as limiting the scope of the utility model; it should be noted that, for a person skilled in the art, the above technical features can be freely combined, and several variations and modifications can be made without departing from the scope of the utility model; therefore, all changes and modifications that come within the meaning and range of equivalency of the claims are to be embraced within their scope.
Claims (10)
1. A magnetic element comprising a first core and a second core made of a high permeability, high saturation magnetic flux density material;
the first magnetic core is of a closed annular structure; the second magnetic core is of a flat plate structure, is arranged on the inner periphery of the first magnetic core, and defines the first magnetic core into a first magnetic core part and a second magnetic core part which are symmetrically arranged;
the magnetic element further comprises a first winding coil and a second winding coil, wherein the first winding coil is wound on the first magnetic core part, and the second winding coil is wound on the second magnetic core part.
2. The magnetic component of claim 1, wherein the second core length dimension is less than the first core inner diameter; both ends of the second magnetic core in the length direction are fixed in the first magnetic core.
3. The magnetic element of claim 1, wherein the saturation magnetic flux density of both the first core and the second core is greater than 1 tesla.
4. The magnetic element of claim 1, wherein the first core is made of amorphous or nanocrystalline;
the second magnetic core is made of amorphous, nanocrystalline or silicon steel.
5. The magnetic element according to any one of claims 1 to 4, wherein an outer periphery of the first core is provided with an insulating coating;
and the periphery of the second magnetic core is provided with an insulating coating.
6. The magnetic component of claim 5, wherein the first winding coil is any one of an enameled wire, a flat copper wire, a stranded wire, or a tri-layer insulated wire;
the second winding coil is any one of an enameled wire, a flat copper wire, a multi-strand stranded wire or a three-layer insulated wire.
7. The magnetic component of claim 6, wherein the number of turns of the first winding coil and the second winding coil is the same.
8. The magnetic component of claim 7, further comprising a mounting base with a plurality of through holes for the two ends of the first winding coil to pass therethrough to form a first pin and for the two ends of the second winding coil to pass therethrough to form a second pin.
9. An inverter comprising a magnetic element as claimed in any one of claims 1 to 8.
10. A switching power supply comprising a magnetic element as claimed in any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321142834.7U CN219759353U (en) | 2023-05-12 | 2023-05-12 | Magnetic element, inverter and switching power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321142834.7U CN219759353U (en) | 2023-05-12 | 2023-05-12 | Magnetic element, inverter and switching power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219759353U true CN219759353U (en) | 2023-09-26 |
Family
ID=88071524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321142834.7U Active CN219759353U (en) | 2023-05-12 | 2023-05-12 | Magnetic element, inverter and switching power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219759353U (en) |
-
2023
- 2023-05-12 CN CN202321142834.7U patent/CN219759353U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20140167897A1 (en) | Power inductor and method of manufacturing the same | |
| US20170025218A1 (en) | Module substrate | |
| CN102893345A (en) | Miniature power inductor and methods of manufacture | |
| JP2017112213A (en) | choke coil | |
| CN204425644U (en) | A kind of plane vortex multilayer connection moving-magnetic type ultrathin telephone receiver | |
| CN219759353U (en) | Magnetic element, inverter and switching power supply | |
| CN108010711A (en) | A kind of process of 3D printing PCB plane transformer | |
| JP2013157352A (en) | Coil device | |
| CN104575947A (en) | Inductor and manufacturing method thereof | |
| CN201936720U (en) | Double-induction inductance element | |
| CN203721416U (en) | Novel integrated PFC (power factor correction) inductor | |
| CN211719418U (en) | High power density planar transformer | |
| CN201608617U (en) | Transverse vibration motor | |
| CN101414505A (en) | Inductance structure | |
| CN214377944U (en) | Differential-common mode inductor | |
| CN111063505A (en) | High-power inductor | |
| CN210403487U (en) | Common mode inductor and power supply integrating differential mode | |
| CN203631231U (en) | Novel integrated resonance inductor | |
| CN210896924U (en) | Magnetic core for low-frequency filter inductor | |
| CN218456010U (en) | High-inductance power inductor | |
| CN221040799U (en) | Amorphous magnetic ring vehicle-mounted audio frequency inductor | |
| JP5945082B1 (en) | antenna | |
| CN215183463U (en) | EMI filter inductor easy to maintain | |
| CN211957380U (en) | Ferrite core assembly for radio frequency inductor | |
| CN216054233U (en) | Noise reduction type transformer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |